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HACTEHA [7]
3 years ago
10

If you reflect (-2,-8) across both axes, which quadrant will it be in? Justify your reasoning.

Mathematics
2 answers:
GalinKa [24]3 years ago
8 0

Answer:

1) Reflect point (-2,-8) across the x-axis. This reflection has a rule

(x,y)→(x,-y).

Thus,

(-2,-8)→(-2,8).

2) Reflect point (-2,8) across the y-axis. This reflection has a rule

(x,y)→(-x,y).

Then

(-2,8)→(2,8).

3) The image point (2,8) is placed in 1st quadrant.

Step-by-step explanation:

i tried to make it easy :|

Zepler [3.9K]3 years ago
3 0
Search Results
Featured snippet from the web
Quadrant I
Answers. Sample Response: If (−2, −8) is reflected across both axes, it will be located at (2, 8), which is in Quadrant I. When a point is reflected across both axes, the signs of both the x- and y-coordinates change.
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Step-by-step explanation:

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I need the answers for this question.
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Answer:

7

Step-by-step explanation:

7 0
3 years ago
There are 9 1/5 gallons of water in Alan’s fish tank. If Alan adds 9 3/5 gallons more, how many gallons will there be in all?
cupoosta [38]
9 1/5 + 9 3/5 = 18 4/5 gallons
7 0
3 years ago
Write the equation of a line that passes through the point (1,4) and has a slope of 9.
Kryger [21]

Answer:

y=9x-5

Step-by-step explanation:

You want to find the equation for a line that passes through the point (1,4) and has a slope of 9.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

To start, you know what m is; it's just the slope, which you said was 9. So you can right away fill in the equation for a line somewhat to read:

y=9x+b.

Now, what about b, the y-intercept?

To find b, think about what your (x,y) point means:

(1,4). When x of the line is 1, y of the line must be 4.

Because you said the line passes through this point, right?

Now, look at our line's equation so far: b is what we want, the 9 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specifically passes through the point (1,4).

So, why not plug in for x the number 1 and y the number 4? This will allow us to solve for b for the particular line that passes through the point you gave!.

(1,4). y=mx+b or 4=9 × 1+b, or solving for b: b=4-(9)(1). b=-5.The equation of the line that passes through the point (1,4) with a slope of 9

is

y=9x-5

4 0
3 years ago
A triangle is isosceles is the altitude from the vertex angle to the base also passes through the midpoint of the base. What are
leonid [27]

Answer:

The answer to your question is  7 and -1/7

Step-by-step explanation:

Data

First line                        Second line

B (4, 4)                            A (0, 1)

M (3.5, 0.5)                     C (7, 0)

Formula

Slope = m = (y2 - y1) / (x2 - x1)

Process

1.- Calculate the slope of the first-line

    x1 = 4        y1 = 4

    x2 = 3.5    y2 = 0.5

-Substitution

    m = (0.5 - 4) / (3.5 - 4)

-Simplification

     m = -3.5 / -0.5

-Result

     m = 7

2.- Calculate the slope of the second line

    x1 = 0          y1 = 1

    x2 = 7         y2 = 0

-Substitution

   m = (0 - 1) / (7 - 0)

-Simplification

   m = -1/7

-Result

   m = -1/7  

5 0
3 years ago
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